]>
Commit | Line | Data |
---|---|---|
c8b75bca EA |
1 | /* |
2 | * Copyright © 2015 Broadcom | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | ||
72f793f1 EA |
9 | /** |
10 | * DOC: VC4 GEM BO management support | |
c8b75bca EA |
11 | * |
12 | * The VC4 GPU architecture (both scanout and rendering) has direct | |
13 | * access to system memory with no MMU in between. To support it, we | |
14 | * use the GEM CMA helper functions to allocate contiguous ranges of | |
15 | * physical memory for our BOs. | |
c826a6e1 EA |
16 | * |
17 | * Since the CMA allocator is very slow, we keep a cache of recently | |
18 | * freed BOs around so that the kernel's allocation of objects for 3D | |
19 | * rendering can return quickly. | |
c8b75bca EA |
20 | */ |
21 | ||
cdec4d36 EA |
22 | #include <linux/dma-buf.h> |
23 | ||
c8b75bca | 24 | #include "vc4_drv.h" |
d5bc60f6 | 25 | #include "uapi/drm/vc4_drm.h" |
c8b75bca | 26 | |
f3099462 EA |
27 | static const char * const bo_type_names[] = { |
28 | "kernel", | |
29 | "V3D", | |
30 | "V3D shader", | |
31 | "dumb", | |
32 | "binner", | |
33 | "RCL", | |
34 | "BCL", | |
35 | "kernel BO cache", | |
36 | }; | |
37 | ||
38 | static bool is_user_label(int label) | |
39 | { | |
40 | return label >= VC4_BO_TYPE_COUNT; | |
41 | } | |
42 | ||
c826a6e1 EA |
43 | static void vc4_bo_stats_dump(struct vc4_dev *vc4) |
44 | { | |
f3099462 EA |
45 | int i; |
46 | ||
47 | for (i = 0; i < vc4->num_labels; i++) { | |
48 | if (!vc4->bo_labels[i].num_allocated) | |
49 | continue; | |
50 | ||
51 | DRM_INFO("%30s: %6dkb BOs (%d)\n", | |
52 | vc4->bo_labels[i].name, | |
53 | vc4->bo_labels[i].size_allocated / 1024, | |
54 | vc4->bo_labels[i].num_allocated); | |
55 | } | |
b9f19259 BB |
56 | |
57 | mutex_lock(&vc4->purgeable.lock); | |
58 | if (vc4->purgeable.num) | |
59 | DRM_INFO("%30s: %6zdkb BOs (%d)\n", "userspace BO cache", | |
60 | vc4->purgeable.size / 1024, vc4->purgeable.num); | |
61 | ||
62 | if (vc4->purgeable.purged_num) | |
63 | DRM_INFO("%30s: %6zdkb BOs (%d)\n", "total purged BO", | |
64 | vc4->purgeable.purged_size / 1024, | |
65 | vc4->purgeable.purged_num); | |
66 | mutex_unlock(&vc4->purgeable.lock); | |
c826a6e1 EA |
67 | } |
68 | ||
69 | #ifdef CONFIG_DEBUG_FS | |
70 | int vc4_bo_stats_debugfs(struct seq_file *m, void *unused) | |
71 | { | |
72 | struct drm_info_node *node = (struct drm_info_node *)m->private; | |
73 | struct drm_device *dev = node->minor->dev; | |
74 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
f3099462 | 75 | int i; |
c826a6e1 | 76 | |
c826a6e1 | 77 | mutex_lock(&vc4->bo_lock); |
f3099462 EA |
78 | for (i = 0; i < vc4->num_labels; i++) { |
79 | if (!vc4->bo_labels[i].num_allocated) | |
80 | continue; | |
81 | ||
82 | seq_printf(m, "%30s: %6dkb BOs (%d)\n", | |
83 | vc4->bo_labels[i].name, | |
84 | vc4->bo_labels[i].size_allocated / 1024, | |
85 | vc4->bo_labels[i].num_allocated); | |
86 | } | |
c826a6e1 EA |
87 | mutex_unlock(&vc4->bo_lock); |
88 | ||
b9f19259 BB |
89 | mutex_lock(&vc4->purgeable.lock); |
90 | if (vc4->purgeable.num) | |
e073db5c | 91 | seq_printf(m, "%30s: %6zdkb BOs (%d)\n", "userspace BO cache", |
b9f19259 BB |
92 | vc4->purgeable.size / 1024, vc4->purgeable.num); |
93 | ||
94 | if (vc4->purgeable.purged_num) | |
e073db5c | 95 | seq_printf(m, "%30s: %6zdkb BOs (%d)\n", "total purged BO", |
b9f19259 BB |
96 | vc4->purgeable.purged_size / 1024, |
97 | vc4->purgeable.purged_num); | |
98 | mutex_unlock(&vc4->purgeable.lock); | |
99 | ||
c826a6e1 EA |
100 | return 0; |
101 | } | |
102 | #endif | |
103 | ||
f3099462 EA |
104 | /* Takes ownership of *name and returns the appropriate slot for it in |
105 | * the bo_labels[] array, extending it as necessary. | |
106 | * | |
107 | * This is inefficient and could use a hash table instead of walking | |
108 | * an array and strcmp()ing. However, the assumption is that user | |
109 | * labeling will be infrequent (scanout buffers and other long-lived | |
110 | * objects, or debug driver builds), so we can live with it for now. | |
111 | */ | |
112 | static int vc4_get_user_label(struct vc4_dev *vc4, const char *name) | |
113 | { | |
114 | int i; | |
115 | int free_slot = -1; | |
116 | ||
117 | for (i = 0; i < vc4->num_labels; i++) { | |
118 | if (!vc4->bo_labels[i].name) { | |
119 | free_slot = i; | |
120 | } else if (strcmp(vc4->bo_labels[i].name, name) == 0) { | |
121 | kfree(name); | |
122 | return i; | |
123 | } | |
124 | } | |
125 | ||
126 | if (free_slot != -1) { | |
127 | WARN_ON(vc4->bo_labels[free_slot].num_allocated != 0); | |
128 | vc4->bo_labels[free_slot].name = name; | |
129 | return free_slot; | |
130 | } else { | |
131 | u32 new_label_count = vc4->num_labels + 1; | |
132 | struct vc4_label *new_labels = | |
133 | krealloc(vc4->bo_labels, | |
134 | new_label_count * sizeof(*new_labels), | |
135 | GFP_KERNEL); | |
136 | ||
137 | if (!new_labels) { | |
138 | kfree(name); | |
139 | return -1; | |
140 | } | |
141 | ||
142 | free_slot = vc4->num_labels; | |
143 | vc4->bo_labels = new_labels; | |
144 | vc4->num_labels = new_label_count; | |
145 | ||
146 | vc4->bo_labels[free_slot].name = name; | |
147 | vc4->bo_labels[free_slot].num_allocated = 0; | |
148 | vc4->bo_labels[free_slot].size_allocated = 0; | |
149 | ||
150 | return free_slot; | |
151 | } | |
152 | } | |
153 | ||
154 | static void vc4_bo_set_label(struct drm_gem_object *gem_obj, int label) | |
155 | { | |
156 | struct vc4_bo *bo = to_vc4_bo(gem_obj); | |
157 | struct vc4_dev *vc4 = to_vc4_dev(gem_obj->dev); | |
158 | ||
159 | lockdep_assert_held(&vc4->bo_lock); | |
160 | ||
161 | if (label != -1) { | |
162 | vc4->bo_labels[label].num_allocated++; | |
163 | vc4->bo_labels[label].size_allocated += gem_obj->size; | |
164 | } | |
165 | ||
166 | vc4->bo_labels[bo->label].num_allocated--; | |
167 | vc4->bo_labels[bo->label].size_allocated -= gem_obj->size; | |
168 | ||
169 | if (vc4->bo_labels[bo->label].num_allocated == 0 && | |
170 | is_user_label(bo->label)) { | |
171 | /* Free user BO label slots on last unreference. | |
172 | * Slots are just where we track the stats for a given | |
173 | * name, and once a name is unused we can reuse that | |
174 | * slot. | |
175 | */ | |
176 | kfree(vc4->bo_labels[bo->label].name); | |
177 | vc4->bo_labels[bo->label].name = NULL; | |
178 | } | |
179 | ||
180 | bo->label = label; | |
181 | } | |
182 | ||
c826a6e1 EA |
183 | static uint32_t bo_page_index(size_t size) |
184 | { | |
185 | return (size / PAGE_SIZE) - 1; | |
186 | } | |
187 | ||
c826a6e1 | 188 | static void vc4_bo_destroy(struct vc4_bo *bo) |
c8b75bca | 189 | { |
c826a6e1 | 190 | struct drm_gem_object *obj = &bo->base.base; |
4e6b1e91 EA |
191 | struct vc4_dev *vc4 = to_vc4_dev(obj->dev); |
192 | ||
193 | lockdep_assert_held(&vc4->bo_lock); | |
f3099462 EA |
194 | |
195 | vc4_bo_set_label(obj, -1); | |
c826a6e1 | 196 | |
463873d5 | 197 | if (bo->validated_shader) { |
c0db1b67 | 198 | kfree(bo->validated_shader->uniform_addr_offsets); |
463873d5 EA |
199 | kfree(bo->validated_shader->texture_samples); |
200 | kfree(bo->validated_shader); | |
201 | bo->validated_shader = NULL; | |
202 | } | |
203 | ||
24bb206f | 204 | reservation_object_fini(&bo->_resv); |
cdec4d36 | 205 | |
c826a6e1 EA |
206 | drm_gem_cma_free_object(obj); |
207 | } | |
208 | ||
c826a6e1 EA |
209 | static void vc4_bo_remove_from_cache(struct vc4_bo *bo) |
210 | { | |
4e6b1e91 EA |
211 | struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev); |
212 | ||
213 | lockdep_assert_held(&vc4->bo_lock); | |
c826a6e1 EA |
214 | list_del(&bo->unref_head); |
215 | list_del(&bo->size_head); | |
216 | } | |
217 | ||
218 | static struct list_head *vc4_get_cache_list_for_size(struct drm_device *dev, | |
219 | size_t size) | |
220 | { | |
221 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
222 | uint32_t page_index = bo_page_index(size); | |
223 | ||
224 | if (vc4->bo_cache.size_list_size <= page_index) { | |
225 | uint32_t new_size = max(vc4->bo_cache.size_list_size * 2, | |
226 | page_index + 1); | |
227 | struct list_head *new_list; | |
228 | uint32_t i; | |
229 | ||
230 | new_list = kmalloc_array(new_size, sizeof(struct list_head), | |
231 | GFP_KERNEL); | |
232 | if (!new_list) | |
233 | return NULL; | |
234 | ||
235 | /* Rebase the old cached BO lists to their new list | |
236 | * head locations. | |
237 | */ | |
238 | for (i = 0; i < vc4->bo_cache.size_list_size; i++) { | |
239 | struct list_head *old_list = | |
240 | &vc4->bo_cache.size_list[i]; | |
241 | ||
242 | if (list_empty(old_list)) | |
243 | INIT_LIST_HEAD(&new_list[i]); | |
244 | else | |
245 | list_replace(old_list, &new_list[i]); | |
246 | } | |
247 | /* And initialize the brand new BO list heads. */ | |
248 | for (i = vc4->bo_cache.size_list_size; i < new_size; i++) | |
249 | INIT_LIST_HEAD(&new_list[i]); | |
250 | ||
251 | kfree(vc4->bo_cache.size_list); | |
252 | vc4->bo_cache.size_list = new_list; | |
253 | vc4->bo_cache.size_list_size = new_size; | |
254 | } | |
255 | ||
256 | return &vc4->bo_cache.size_list[page_index]; | |
257 | } | |
258 | ||
ea903838 | 259 | static void vc4_bo_cache_purge(struct drm_device *dev) |
c826a6e1 EA |
260 | { |
261 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
262 | ||
263 | mutex_lock(&vc4->bo_lock); | |
264 | while (!list_empty(&vc4->bo_cache.time_list)) { | |
265 | struct vc4_bo *bo = list_last_entry(&vc4->bo_cache.time_list, | |
266 | struct vc4_bo, unref_head); | |
267 | vc4_bo_remove_from_cache(bo); | |
268 | vc4_bo_destroy(bo); | |
269 | } | |
270 | mutex_unlock(&vc4->bo_lock); | |
271 | } | |
272 | ||
b9f19259 BB |
273 | void vc4_bo_add_to_purgeable_pool(struct vc4_bo *bo) |
274 | { | |
275 | struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev); | |
276 | ||
277 | mutex_lock(&vc4->purgeable.lock); | |
278 | list_add_tail(&bo->size_head, &vc4->purgeable.list); | |
279 | vc4->purgeable.num++; | |
280 | vc4->purgeable.size += bo->base.base.size; | |
281 | mutex_unlock(&vc4->purgeable.lock); | |
282 | } | |
283 | ||
284 | static void vc4_bo_remove_from_purgeable_pool_locked(struct vc4_bo *bo) | |
285 | { | |
286 | struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev); | |
287 | ||
288 | /* list_del_init() is used here because the caller might release | |
289 | * the purgeable lock in order to acquire the madv one and update the | |
290 | * madv status. | |
291 | * During this short period of time a user might decide to mark | |
292 | * the BO as unpurgeable, and if bo->madv is set to | |
293 | * VC4_MADV_DONTNEED it will try to remove the BO from the | |
294 | * purgeable list which will fail if the ->next/prev fields | |
295 | * are set to LIST_POISON1/LIST_POISON2 (which is what | |
296 | * list_del() does). | |
297 | * Re-initializing the list element guarantees that list_del() | |
298 | * will work correctly even if it's a NOP. | |
299 | */ | |
300 | list_del_init(&bo->size_head); | |
301 | vc4->purgeable.num--; | |
302 | vc4->purgeable.size -= bo->base.base.size; | |
303 | } | |
304 | ||
305 | void vc4_bo_remove_from_purgeable_pool(struct vc4_bo *bo) | |
306 | { | |
307 | struct vc4_dev *vc4 = to_vc4_dev(bo->base.base.dev); | |
308 | ||
309 | mutex_lock(&vc4->purgeable.lock); | |
310 | vc4_bo_remove_from_purgeable_pool_locked(bo); | |
311 | mutex_unlock(&vc4->purgeable.lock); | |
312 | } | |
313 | ||
314 | static void vc4_bo_purge(struct drm_gem_object *obj) | |
315 | { | |
316 | struct vc4_bo *bo = to_vc4_bo(obj); | |
317 | struct drm_device *dev = obj->dev; | |
318 | ||
319 | WARN_ON(!mutex_is_locked(&bo->madv_lock)); | |
320 | WARN_ON(bo->madv != VC4_MADV_DONTNEED); | |
321 | ||
322 | drm_vma_node_unmap(&obj->vma_node, dev->anon_inode->i_mapping); | |
323 | ||
324 | dma_free_wc(dev->dev, obj->size, bo->base.vaddr, bo->base.paddr); | |
325 | bo->base.vaddr = NULL; | |
326 | bo->madv = __VC4_MADV_PURGED; | |
327 | } | |
328 | ||
329 | static void vc4_bo_userspace_cache_purge(struct drm_device *dev) | |
330 | { | |
331 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
332 | ||
333 | mutex_lock(&vc4->purgeable.lock); | |
334 | while (!list_empty(&vc4->purgeable.list)) { | |
335 | struct vc4_bo *bo = list_first_entry(&vc4->purgeable.list, | |
336 | struct vc4_bo, size_head); | |
337 | struct drm_gem_object *obj = &bo->base.base; | |
338 | size_t purged_size = 0; | |
339 | ||
340 | vc4_bo_remove_from_purgeable_pool_locked(bo); | |
341 | ||
342 | /* Release the purgeable lock while we're purging the BO so | |
343 | * that other people can continue inserting things in the | |
344 | * purgeable pool without having to wait for all BOs to be | |
345 | * purged. | |
346 | */ | |
347 | mutex_unlock(&vc4->purgeable.lock); | |
348 | mutex_lock(&bo->madv_lock); | |
349 | ||
350 | /* Since we released the purgeable pool lock before acquiring | |
351 | * the BO madv one, the user may have marked the BO as WILLNEED | |
352 | * and re-used it in the meantime. | |
353 | * Before purging the BO we need to make sure | |
354 | * - it is still marked as DONTNEED | |
355 | * - it has not been re-inserted in the purgeable list | |
356 | * - it is not used by HW blocks | |
357 | * If one of these conditions is not met, just skip the entry. | |
358 | */ | |
359 | if (bo->madv == VC4_MADV_DONTNEED && | |
360 | list_empty(&bo->size_head) && | |
361 | !refcount_read(&bo->usecnt)) { | |
362 | purged_size = bo->base.base.size; | |
363 | vc4_bo_purge(obj); | |
364 | } | |
365 | mutex_unlock(&bo->madv_lock); | |
366 | mutex_lock(&vc4->purgeable.lock); | |
367 | ||
368 | if (purged_size) { | |
369 | vc4->purgeable.purged_size += purged_size; | |
370 | vc4->purgeable.purged_num++; | |
371 | } | |
372 | } | |
373 | mutex_unlock(&vc4->purgeable.lock); | |
374 | } | |
375 | ||
c826a6e1 | 376 | static struct vc4_bo *vc4_bo_get_from_cache(struct drm_device *dev, |
f3099462 EA |
377 | uint32_t size, |
378 | enum vc4_kernel_bo_type type) | |
c826a6e1 EA |
379 | { |
380 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
381 | uint32_t page_index = bo_page_index(size); | |
382 | struct vc4_bo *bo = NULL; | |
383 | ||
384 | size = roundup(size, PAGE_SIZE); | |
385 | ||
386 | mutex_lock(&vc4->bo_lock); | |
387 | if (page_index >= vc4->bo_cache.size_list_size) | |
388 | goto out; | |
389 | ||
390 | if (list_empty(&vc4->bo_cache.size_list[page_index])) | |
391 | goto out; | |
392 | ||
393 | bo = list_first_entry(&vc4->bo_cache.size_list[page_index], | |
394 | struct vc4_bo, size_head); | |
395 | vc4_bo_remove_from_cache(bo); | |
396 | kref_init(&bo->base.base.refcount); | |
397 | ||
398 | out: | |
f3099462 EA |
399 | if (bo) |
400 | vc4_bo_set_label(&bo->base.base, type); | |
c826a6e1 EA |
401 | mutex_unlock(&vc4->bo_lock); |
402 | return bo; | |
403 | } | |
404 | ||
405 | /** | |
406 | * vc4_gem_create_object - Implementation of driver->gem_create_object. | |
72f793f1 EA |
407 | * @dev: DRM device |
408 | * @size: Size in bytes of the memory the object will reference | |
c826a6e1 EA |
409 | * |
410 | * This lets the CMA helpers allocate object structs for us, and keep | |
411 | * our BO stats correct. | |
412 | */ | |
413 | struct drm_gem_object *vc4_create_object(struct drm_device *dev, size_t size) | |
414 | { | |
415 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
416 | struct vc4_bo *bo; | |
417 | ||
418 | bo = kzalloc(sizeof(*bo), GFP_KERNEL); | |
419 | if (!bo) | |
420 | return ERR_PTR(-ENOMEM); | |
421 | ||
b9f19259 BB |
422 | bo->madv = VC4_MADV_WILLNEED; |
423 | refcount_set(&bo->usecnt, 0); | |
424 | mutex_init(&bo->madv_lock); | |
c826a6e1 | 425 | mutex_lock(&vc4->bo_lock); |
f3099462 EA |
426 | bo->label = VC4_BO_TYPE_KERNEL; |
427 | vc4->bo_labels[VC4_BO_TYPE_KERNEL].num_allocated++; | |
428 | vc4->bo_labels[VC4_BO_TYPE_KERNEL].size_allocated += size; | |
c826a6e1 | 429 | mutex_unlock(&vc4->bo_lock); |
24bb206f HV |
430 | bo->resv = &bo->_resv; |
431 | reservation_object_init(bo->resv); | |
c826a6e1 EA |
432 | |
433 | return &bo->base.base; | |
434 | } | |
435 | ||
436 | struct vc4_bo *vc4_bo_create(struct drm_device *dev, size_t unaligned_size, | |
f3099462 | 437 | bool allow_unzeroed, enum vc4_kernel_bo_type type) |
c826a6e1 EA |
438 | { |
439 | size_t size = roundup(unaligned_size, PAGE_SIZE); | |
440 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
c8b75bca | 441 | struct drm_gem_cma_object *cma_obj; |
eb981383 | 442 | struct vc4_bo *bo; |
c8b75bca | 443 | |
c826a6e1 | 444 | if (size == 0) |
2c68f1fc | 445 | return ERR_PTR(-EINVAL); |
c826a6e1 EA |
446 | |
447 | /* First, try to get a vc4_bo from the kernel BO cache. */ | |
f3099462 | 448 | bo = vc4_bo_get_from_cache(dev, size, type); |
eb981383 EA |
449 | if (bo) { |
450 | if (!allow_unzeroed) | |
451 | memset(bo->base.vaddr, 0, bo->base.base.size); | |
452 | return bo; | |
c826a6e1 EA |
453 | } |
454 | ||
455 | cma_obj = drm_gem_cma_create(dev, size); | |
456 | if (IS_ERR(cma_obj)) { | |
457 | /* | |
458 | * If we've run out of CMA memory, kill the cache of | |
459 | * CMA allocations we've got laying around and try again. | |
460 | */ | |
461 | vc4_bo_cache_purge(dev); | |
b9f19259 BB |
462 | cma_obj = drm_gem_cma_create(dev, size); |
463 | } | |
c826a6e1 | 464 | |
b9f19259 BB |
465 | if (IS_ERR(cma_obj)) { |
466 | /* | |
467 | * Still not enough CMA memory, purge the userspace BO | |
468 | * cache and retry. | |
469 | * This is sub-optimal since we purge the whole userspace | |
470 | * BO cache which forces user that want to re-use the BO to | |
471 | * restore its initial content. | |
472 | * Ideally, we should purge entries one by one and retry | |
473 | * after each to see if CMA allocation succeeds. Or even | |
474 | * better, try to find an entry with at least the same | |
475 | * size. | |
476 | */ | |
477 | vc4_bo_userspace_cache_purge(dev); | |
c826a6e1 | 478 | cma_obj = drm_gem_cma_create(dev, size); |
b9f19259 BB |
479 | } |
480 | ||
481 | if (IS_ERR(cma_obj)) { | |
482 | DRM_ERROR("Failed to allocate from CMA:\n"); | |
483 | vc4_bo_stats_dump(vc4); | |
484 | return ERR_PTR(-ENOMEM); | |
c826a6e1 | 485 | } |
f3099462 EA |
486 | bo = to_vc4_bo(&cma_obj->base); |
487 | ||
b9f19259 BB |
488 | /* By default, BOs do not support the MADV ioctl. This will be enabled |
489 | * only on BOs that are exposed to userspace (V3D, V3D_SHADER and DUMB | |
490 | * BOs). | |
491 | */ | |
492 | bo->madv = __VC4_MADV_NOTSUPP; | |
493 | ||
f3099462 EA |
494 | mutex_lock(&vc4->bo_lock); |
495 | vc4_bo_set_label(&cma_obj->base, type); | |
496 | mutex_unlock(&vc4->bo_lock); | |
497 | ||
498 | return bo; | |
c8b75bca EA |
499 | } |
500 | ||
501 | int vc4_dumb_create(struct drm_file *file_priv, | |
502 | struct drm_device *dev, | |
503 | struct drm_mode_create_dumb *args) | |
504 | { | |
505 | int min_pitch = DIV_ROUND_UP(args->width * args->bpp, 8); | |
506 | struct vc4_bo *bo = NULL; | |
507 | int ret; | |
508 | ||
509 | if (args->pitch < min_pitch) | |
510 | args->pitch = min_pitch; | |
511 | ||
512 | if (args->size < args->pitch * args->height) | |
513 | args->size = args->pitch * args->height; | |
514 | ||
f3099462 | 515 | bo = vc4_bo_create(dev, args->size, false, VC4_BO_TYPE_DUMB); |
2c68f1fc EA |
516 | if (IS_ERR(bo)) |
517 | return PTR_ERR(bo); | |
c8b75bca | 518 | |
b9f19259 BB |
519 | bo->madv = VC4_MADV_WILLNEED; |
520 | ||
c8b75bca | 521 | ret = drm_gem_handle_create(file_priv, &bo->base.base, &args->handle); |
1d5494e9 | 522 | drm_gem_object_put_unlocked(&bo->base.base); |
c8b75bca EA |
523 | |
524 | return ret; | |
525 | } | |
c826a6e1 | 526 | |
c826a6e1 EA |
527 | static void vc4_bo_cache_free_old(struct drm_device *dev) |
528 | { | |
529 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
530 | unsigned long expire_time = jiffies - msecs_to_jiffies(1000); | |
531 | ||
4e6b1e91 EA |
532 | lockdep_assert_held(&vc4->bo_lock); |
533 | ||
c826a6e1 EA |
534 | while (!list_empty(&vc4->bo_cache.time_list)) { |
535 | struct vc4_bo *bo = list_last_entry(&vc4->bo_cache.time_list, | |
536 | struct vc4_bo, unref_head); | |
537 | if (time_before(expire_time, bo->free_time)) { | |
538 | mod_timer(&vc4->bo_cache.time_timer, | |
539 | round_jiffies_up(jiffies + | |
540 | msecs_to_jiffies(1000))); | |
541 | return; | |
542 | } | |
543 | ||
544 | vc4_bo_remove_from_cache(bo); | |
545 | vc4_bo_destroy(bo); | |
546 | } | |
547 | } | |
548 | ||
549 | /* Called on the last userspace/kernel unreference of the BO. Returns | |
550 | * it to the BO cache if possible, otherwise frees it. | |
c826a6e1 EA |
551 | */ |
552 | void vc4_free_object(struct drm_gem_object *gem_bo) | |
553 | { | |
554 | struct drm_device *dev = gem_bo->dev; | |
555 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
556 | struct vc4_bo *bo = to_vc4_bo(gem_bo); | |
557 | struct list_head *cache_list; | |
558 | ||
b9f19259 BB |
559 | /* Remove the BO from the purgeable list. */ |
560 | mutex_lock(&bo->madv_lock); | |
561 | if (bo->madv == VC4_MADV_DONTNEED && !refcount_read(&bo->usecnt)) | |
562 | vc4_bo_remove_from_purgeable_pool(bo); | |
563 | mutex_unlock(&bo->madv_lock); | |
564 | ||
c826a6e1 EA |
565 | mutex_lock(&vc4->bo_lock); |
566 | /* If the object references someone else's memory, we can't cache it. | |
567 | */ | |
568 | if (gem_bo->import_attach) { | |
569 | vc4_bo_destroy(bo); | |
570 | goto out; | |
571 | } | |
572 | ||
573 | /* Don't cache if it was publicly named. */ | |
574 | if (gem_bo->name) { | |
575 | vc4_bo_destroy(bo); | |
576 | goto out; | |
577 | } | |
578 | ||
ca39b449 | 579 | /* If this object was partially constructed but CMA allocation |
b9f19259 BB |
580 | * had failed, just free it. Can also happen when the BO has been |
581 | * purged. | |
ca39b449 EA |
582 | */ |
583 | if (!bo->base.vaddr) { | |
584 | vc4_bo_destroy(bo); | |
585 | goto out; | |
586 | } | |
587 | ||
c826a6e1 EA |
588 | cache_list = vc4_get_cache_list_for_size(dev, gem_bo->size); |
589 | if (!cache_list) { | |
590 | vc4_bo_destroy(bo); | |
591 | goto out; | |
592 | } | |
593 | ||
463873d5 | 594 | if (bo->validated_shader) { |
c0db1b67 | 595 | kfree(bo->validated_shader->uniform_addr_offsets); |
463873d5 EA |
596 | kfree(bo->validated_shader->texture_samples); |
597 | kfree(bo->validated_shader); | |
598 | bo->validated_shader = NULL; | |
599 | } | |
600 | ||
b9f19259 BB |
601 | /* Reset madv and usecnt before adding the BO to the cache. */ |
602 | bo->madv = __VC4_MADV_NOTSUPP; | |
603 | refcount_set(&bo->usecnt, 0); | |
604 | ||
83753117 | 605 | bo->t_format = false; |
c826a6e1 EA |
606 | bo->free_time = jiffies; |
607 | list_add(&bo->size_head, cache_list); | |
608 | list_add(&bo->unref_head, &vc4->bo_cache.time_list); | |
609 | ||
f3099462 | 610 | vc4_bo_set_label(&bo->base.base, VC4_BO_TYPE_KERNEL_CACHE); |
c826a6e1 EA |
611 | |
612 | vc4_bo_cache_free_old(dev); | |
613 | ||
614 | out: | |
615 | mutex_unlock(&vc4->bo_lock); | |
616 | } | |
617 | ||
618 | static void vc4_bo_cache_time_work(struct work_struct *work) | |
619 | { | |
620 | struct vc4_dev *vc4 = | |
621 | container_of(work, struct vc4_dev, bo_cache.time_work); | |
622 | struct drm_device *dev = vc4->dev; | |
623 | ||
624 | mutex_lock(&vc4->bo_lock); | |
625 | vc4_bo_cache_free_old(dev); | |
626 | mutex_unlock(&vc4->bo_lock); | |
627 | } | |
628 | ||
b9f19259 BB |
629 | int vc4_bo_inc_usecnt(struct vc4_bo *bo) |
630 | { | |
631 | int ret; | |
632 | ||
633 | /* Fast path: if the BO is already retained by someone, no need to | |
634 | * check the madv status. | |
635 | */ | |
636 | if (refcount_inc_not_zero(&bo->usecnt)) | |
637 | return 0; | |
638 | ||
639 | mutex_lock(&bo->madv_lock); | |
640 | switch (bo->madv) { | |
641 | case VC4_MADV_WILLNEED: | |
5bfd4013 BB |
642 | if (!refcount_inc_not_zero(&bo->usecnt)) |
643 | refcount_set(&bo->usecnt, 1); | |
b9f19259 BB |
644 | ret = 0; |
645 | break; | |
646 | case VC4_MADV_DONTNEED: | |
647 | /* We shouldn't use a BO marked as purgeable if at least | |
648 | * someone else retained its content by incrementing usecnt. | |
649 | * Luckily the BO hasn't been purged yet, but something wrong | |
650 | * is happening here. Just throw an error instead of | |
651 | * authorizing this use case. | |
652 | */ | |
653 | case __VC4_MADV_PURGED: | |
654 | /* We can't use a purged BO. */ | |
655 | default: | |
656 | /* Invalid madv value. */ | |
657 | ret = -EINVAL; | |
658 | break; | |
659 | } | |
660 | mutex_unlock(&bo->madv_lock); | |
661 | ||
662 | return ret; | |
663 | } | |
664 | ||
665 | void vc4_bo_dec_usecnt(struct vc4_bo *bo) | |
666 | { | |
667 | /* Fast path: if the BO is still retained by someone, no need to test | |
668 | * the madv value. | |
669 | */ | |
670 | if (refcount_dec_not_one(&bo->usecnt)) | |
671 | return; | |
672 | ||
673 | mutex_lock(&bo->madv_lock); | |
674 | if (refcount_dec_and_test(&bo->usecnt) && | |
675 | bo->madv == VC4_MADV_DONTNEED) | |
676 | vc4_bo_add_to_purgeable_pool(bo); | |
677 | mutex_unlock(&bo->madv_lock); | |
678 | } | |
679 | ||
0078730f | 680 | static void vc4_bo_cache_time_timer(struct timer_list *t) |
c826a6e1 | 681 | { |
0078730f | 682 | struct vc4_dev *vc4 = from_timer(vc4, t, bo_cache.time_timer); |
c826a6e1 EA |
683 | |
684 | schedule_work(&vc4->bo_cache.time_work); | |
685 | } | |
686 | ||
cdec4d36 EA |
687 | struct reservation_object *vc4_prime_res_obj(struct drm_gem_object *obj) |
688 | { | |
689 | struct vc4_bo *bo = to_vc4_bo(obj); | |
690 | ||
691 | return bo->resv; | |
692 | } | |
693 | ||
463873d5 EA |
694 | struct dma_buf * |
695 | vc4_prime_export(struct drm_device *dev, struct drm_gem_object *obj, int flags) | |
696 | { | |
697 | struct vc4_bo *bo = to_vc4_bo(obj); | |
b9f19259 BB |
698 | struct dma_buf *dmabuf; |
699 | int ret; | |
463873d5 EA |
700 | |
701 | if (bo->validated_shader) { | |
fb95992a | 702 | DRM_DEBUG("Attempting to export shader BO\n"); |
463873d5 EA |
703 | return ERR_PTR(-EINVAL); |
704 | } | |
705 | ||
b9f19259 BB |
706 | /* Note: as soon as the BO is exported it becomes unpurgeable, because |
707 | * noone ever decrements the usecnt even if the reference held by the | |
708 | * exported BO is released. This shouldn't be a problem since we don't | |
709 | * expect exported BOs to be marked as purgeable. | |
710 | */ | |
711 | ret = vc4_bo_inc_usecnt(bo); | |
712 | if (ret) { | |
713 | DRM_ERROR("Failed to increment BO usecnt\n"); | |
714 | return ERR_PTR(ret); | |
715 | } | |
716 | ||
717 | dmabuf = drm_gem_prime_export(dev, obj, flags); | |
718 | if (IS_ERR(dmabuf)) | |
719 | vc4_bo_dec_usecnt(bo); | |
720 | ||
721 | return dmabuf; | |
722 | } | |
723 | ||
abd7dbe9 | 724 | vm_fault_t vc4_fault(struct vm_fault *vmf) |
b9f19259 BB |
725 | { |
726 | struct vm_area_struct *vma = vmf->vma; | |
727 | struct drm_gem_object *obj = vma->vm_private_data; | |
728 | struct vc4_bo *bo = to_vc4_bo(obj); | |
729 | ||
730 | /* The only reason we would end up here is when user-space accesses | |
731 | * BO's memory after it's been purged. | |
732 | */ | |
733 | mutex_lock(&bo->madv_lock); | |
734 | WARN_ON(bo->madv != __VC4_MADV_PURGED); | |
735 | mutex_unlock(&bo->madv_lock); | |
736 | ||
737 | return VM_FAULT_SIGBUS; | |
463873d5 EA |
738 | } |
739 | ||
740 | int vc4_mmap(struct file *filp, struct vm_area_struct *vma) | |
741 | { | |
742 | struct drm_gem_object *gem_obj; | |
b9f19259 | 743 | unsigned long vm_pgoff; |
463873d5 EA |
744 | struct vc4_bo *bo; |
745 | int ret; | |
746 | ||
747 | ret = drm_gem_mmap(filp, vma); | |
748 | if (ret) | |
749 | return ret; | |
750 | ||
751 | gem_obj = vma->vm_private_data; | |
752 | bo = to_vc4_bo(gem_obj); | |
753 | ||
754 | if (bo->validated_shader && (vma->vm_flags & VM_WRITE)) { | |
fb95992a | 755 | DRM_DEBUG("mmaping of shader BOs for writing not allowed.\n"); |
463873d5 EA |
756 | return -EINVAL; |
757 | } | |
758 | ||
b9f19259 BB |
759 | if (bo->madv != VC4_MADV_WILLNEED) { |
760 | DRM_DEBUG("mmaping of %s BO not allowed\n", | |
761 | bo->madv == VC4_MADV_DONTNEED ? | |
762 | "purgeable" : "purged"); | |
763 | return -EINVAL; | |
764 | } | |
765 | ||
463873d5 EA |
766 | /* |
767 | * Clear the VM_PFNMAP flag that was set by drm_gem_mmap(), and set the | |
768 | * vm_pgoff (used as a fake buffer offset by DRM) to 0 as we want to map | |
769 | * the whole buffer. | |
770 | */ | |
771 | vma->vm_flags &= ~VM_PFNMAP; | |
463873d5 | 772 | |
b9f19259 BB |
773 | /* This ->vm_pgoff dance is needed to make all parties happy: |
774 | * - dma_mmap_wc() uses ->vm_pgoff as an offset within the allocated | |
775 | * mem-region, hence the need to set it to zero (the value set by | |
776 | * the DRM core is a virtual offset encoding the GEM object-id) | |
777 | * - the mmap() core logic needs ->vm_pgoff to be restored to its | |
778 | * initial value before returning from this function because it | |
779 | * encodes the offset of this GEM in the dev->anon_inode pseudo-file | |
780 | * and this information will be used when we invalidate userspace | |
781 | * mappings with drm_vma_node_unmap() (called from vc4_gem_purge()). | |
782 | */ | |
783 | vm_pgoff = vma->vm_pgoff; | |
784 | vma->vm_pgoff = 0; | |
f6e45661 LR |
785 | ret = dma_mmap_wc(bo->base.base.dev->dev, vma, bo->base.vaddr, |
786 | bo->base.paddr, vma->vm_end - vma->vm_start); | |
b9f19259 BB |
787 | vma->vm_pgoff = vm_pgoff; |
788 | ||
463873d5 EA |
789 | if (ret) |
790 | drm_gem_vm_close(vma); | |
791 | ||
792 | return ret; | |
793 | } | |
794 | ||
795 | int vc4_prime_mmap(struct drm_gem_object *obj, struct vm_area_struct *vma) | |
796 | { | |
797 | struct vc4_bo *bo = to_vc4_bo(obj); | |
798 | ||
799 | if (bo->validated_shader && (vma->vm_flags & VM_WRITE)) { | |
fb95992a | 800 | DRM_DEBUG("mmaping of shader BOs for writing not allowed.\n"); |
463873d5 EA |
801 | return -EINVAL; |
802 | } | |
803 | ||
804 | return drm_gem_cma_prime_mmap(obj, vma); | |
805 | } | |
806 | ||
807 | void *vc4_prime_vmap(struct drm_gem_object *obj) | |
808 | { | |
809 | struct vc4_bo *bo = to_vc4_bo(obj); | |
810 | ||
811 | if (bo->validated_shader) { | |
fb95992a | 812 | DRM_DEBUG("mmaping of shader BOs not allowed.\n"); |
463873d5 EA |
813 | return ERR_PTR(-EINVAL); |
814 | } | |
815 | ||
816 | return drm_gem_cma_prime_vmap(obj); | |
817 | } | |
818 | ||
cdec4d36 EA |
819 | struct drm_gem_object * |
820 | vc4_prime_import_sg_table(struct drm_device *dev, | |
821 | struct dma_buf_attachment *attach, | |
822 | struct sg_table *sgt) | |
823 | { | |
824 | struct drm_gem_object *obj; | |
825 | struct vc4_bo *bo; | |
826 | ||
827 | obj = drm_gem_cma_prime_import_sg_table(dev, attach, sgt); | |
828 | if (IS_ERR(obj)) | |
829 | return obj; | |
830 | ||
831 | bo = to_vc4_bo(obj); | |
832 | bo->resv = attach->dmabuf->resv; | |
833 | ||
834 | return obj; | |
835 | } | |
836 | ||
d5bc60f6 EA |
837 | int vc4_create_bo_ioctl(struct drm_device *dev, void *data, |
838 | struct drm_file *file_priv) | |
839 | { | |
840 | struct drm_vc4_create_bo *args = data; | |
841 | struct vc4_bo *bo = NULL; | |
842 | int ret; | |
843 | ||
844 | /* | |
845 | * We can't allocate from the BO cache, because the BOs don't | |
846 | * get zeroed, and that might leak data between users. | |
847 | */ | |
f3099462 | 848 | bo = vc4_bo_create(dev, args->size, false, VC4_BO_TYPE_V3D); |
2c68f1fc EA |
849 | if (IS_ERR(bo)) |
850 | return PTR_ERR(bo); | |
d5bc60f6 | 851 | |
b9f19259 BB |
852 | bo->madv = VC4_MADV_WILLNEED; |
853 | ||
d5bc60f6 | 854 | ret = drm_gem_handle_create(file_priv, &bo->base.base, &args->handle); |
1d5494e9 | 855 | drm_gem_object_put_unlocked(&bo->base.base); |
d5bc60f6 EA |
856 | |
857 | return ret; | |
858 | } | |
859 | ||
860 | int vc4_mmap_bo_ioctl(struct drm_device *dev, void *data, | |
861 | struct drm_file *file_priv) | |
862 | { | |
863 | struct drm_vc4_mmap_bo *args = data; | |
864 | struct drm_gem_object *gem_obj; | |
865 | ||
a8ad0bd8 | 866 | gem_obj = drm_gem_object_lookup(file_priv, args->handle); |
d5bc60f6 | 867 | if (!gem_obj) { |
fb95992a | 868 | DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle); |
d5bc60f6 EA |
869 | return -EINVAL; |
870 | } | |
871 | ||
872 | /* The mmap offset was set up at BO allocation time. */ | |
873 | args->offset = drm_vma_node_offset_addr(&gem_obj->vma_node); | |
874 | ||
1d5494e9 | 875 | drm_gem_object_put_unlocked(gem_obj); |
d5bc60f6 EA |
876 | return 0; |
877 | } | |
878 | ||
463873d5 EA |
879 | int |
880 | vc4_create_shader_bo_ioctl(struct drm_device *dev, void *data, | |
881 | struct drm_file *file_priv) | |
882 | { | |
883 | struct drm_vc4_create_shader_bo *args = data; | |
884 | struct vc4_bo *bo = NULL; | |
885 | int ret; | |
886 | ||
887 | if (args->size == 0) | |
888 | return -EINVAL; | |
889 | ||
890 | if (args->size % sizeof(u64) != 0) | |
891 | return -EINVAL; | |
892 | ||
893 | if (args->flags != 0) { | |
894 | DRM_INFO("Unknown flags set: 0x%08x\n", args->flags); | |
895 | return -EINVAL; | |
896 | } | |
897 | ||
898 | if (args->pad != 0) { | |
899 | DRM_INFO("Pad set: 0x%08x\n", args->pad); | |
900 | return -EINVAL; | |
901 | } | |
902 | ||
f3099462 | 903 | bo = vc4_bo_create(dev, args->size, true, VC4_BO_TYPE_V3D_SHADER); |
2c68f1fc EA |
904 | if (IS_ERR(bo)) |
905 | return PTR_ERR(bo); | |
463873d5 | 906 | |
b9f19259 BB |
907 | bo->madv = VC4_MADV_WILLNEED; |
908 | ||
585cb132 | 909 | if (copy_from_user(bo->base.vaddr, |
463873d5 | 910 | (void __user *)(uintptr_t)args->data, |
585cb132 DC |
911 | args->size)) { |
912 | ret = -EFAULT; | |
463873d5 | 913 | goto fail; |
585cb132 | 914 | } |
463873d5 EA |
915 | /* Clear the rest of the memory from allocating from the BO |
916 | * cache. | |
917 | */ | |
918 | memset(bo->base.vaddr + args->size, 0, | |
919 | bo->base.base.size - args->size); | |
920 | ||
921 | bo->validated_shader = vc4_validate_shader(&bo->base); | |
922 | if (!bo->validated_shader) { | |
923 | ret = -EINVAL; | |
924 | goto fail; | |
925 | } | |
926 | ||
927 | /* We have to create the handle after validation, to avoid | |
928 | * races for users to do doing things like mmap the shader BO. | |
929 | */ | |
930 | ret = drm_gem_handle_create(file_priv, &bo->base.base, &args->handle); | |
931 | ||
932 | fail: | |
1d5494e9 | 933 | drm_gem_object_put_unlocked(&bo->base.base); |
463873d5 EA |
934 | |
935 | return ret; | |
936 | } | |
937 | ||
83753117 EA |
938 | /** |
939 | * vc4_set_tiling_ioctl() - Sets the tiling modifier for a BO. | |
940 | * @dev: DRM device | |
941 | * @data: ioctl argument | |
942 | * @file_priv: DRM file for this fd | |
943 | * | |
944 | * The tiling state of the BO decides the default modifier of an fb if | |
945 | * no specific modifier was set by userspace, and the return value of | |
946 | * vc4_get_tiling_ioctl() (so that userspace can treat a BO it | |
947 | * received from dmabuf as the same tiling format as the producer | |
948 | * used). | |
949 | */ | |
950 | int vc4_set_tiling_ioctl(struct drm_device *dev, void *data, | |
951 | struct drm_file *file_priv) | |
952 | { | |
953 | struct drm_vc4_set_tiling *args = data; | |
954 | struct drm_gem_object *gem_obj; | |
955 | struct vc4_bo *bo; | |
956 | bool t_format; | |
957 | ||
958 | if (args->flags != 0) | |
959 | return -EINVAL; | |
960 | ||
961 | switch (args->modifier) { | |
962 | case DRM_FORMAT_MOD_NONE: | |
963 | t_format = false; | |
964 | break; | |
965 | case DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED: | |
966 | t_format = true; | |
967 | break; | |
968 | default: | |
969 | return -EINVAL; | |
970 | } | |
971 | ||
972 | gem_obj = drm_gem_object_lookup(file_priv, args->handle); | |
973 | if (!gem_obj) { | |
fb95992a | 974 | DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle); |
83753117 EA |
975 | return -ENOENT; |
976 | } | |
977 | bo = to_vc4_bo(gem_obj); | |
978 | bo->t_format = t_format; | |
979 | ||
1d5494e9 | 980 | drm_gem_object_put_unlocked(gem_obj); |
83753117 EA |
981 | |
982 | return 0; | |
983 | } | |
984 | ||
985 | /** | |
986 | * vc4_get_tiling_ioctl() - Gets the tiling modifier for a BO. | |
987 | * @dev: DRM device | |
988 | * @data: ioctl argument | |
989 | * @file_priv: DRM file for this fd | |
990 | * | |
991 | * Returns the tiling modifier for a BO as set by vc4_set_tiling_ioctl(). | |
992 | */ | |
993 | int vc4_get_tiling_ioctl(struct drm_device *dev, void *data, | |
994 | struct drm_file *file_priv) | |
995 | { | |
996 | struct drm_vc4_get_tiling *args = data; | |
997 | struct drm_gem_object *gem_obj; | |
998 | struct vc4_bo *bo; | |
999 | ||
1000 | if (args->flags != 0 || args->modifier != 0) | |
1001 | return -EINVAL; | |
1002 | ||
1003 | gem_obj = drm_gem_object_lookup(file_priv, args->handle); | |
1004 | if (!gem_obj) { | |
fb95992a | 1005 | DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle); |
83753117 EA |
1006 | return -ENOENT; |
1007 | } | |
1008 | bo = to_vc4_bo(gem_obj); | |
1009 | ||
1010 | if (bo->t_format) | |
1011 | args->modifier = DRM_FORMAT_MOD_BROADCOM_VC4_T_TILED; | |
1012 | else | |
1013 | args->modifier = DRM_FORMAT_MOD_NONE; | |
1014 | ||
1d5494e9 | 1015 | drm_gem_object_put_unlocked(gem_obj); |
83753117 EA |
1016 | |
1017 | return 0; | |
1018 | } | |
1019 | ||
f3099462 | 1020 | int vc4_bo_cache_init(struct drm_device *dev) |
c826a6e1 EA |
1021 | { |
1022 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
f3099462 EA |
1023 | int i; |
1024 | ||
1025 | /* Create the initial set of BO labels that the kernel will | |
1026 | * use. This lets us avoid a bunch of string reallocation in | |
1027 | * the kernel's draw and BO allocation paths. | |
1028 | */ | |
1029 | vc4->bo_labels = kcalloc(VC4_BO_TYPE_COUNT, sizeof(*vc4->bo_labels), | |
1030 | GFP_KERNEL); | |
1031 | if (!vc4->bo_labels) | |
1032 | return -ENOMEM; | |
1033 | vc4->num_labels = VC4_BO_TYPE_COUNT; | |
1034 | ||
1035 | BUILD_BUG_ON(ARRAY_SIZE(bo_type_names) != VC4_BO_TYPE_COUNT); | |
1036 | for (i = 0; i < VC4_BO_TYPE_COUNT; i++) | |
1037 | vc4->bo_labels[i].name = bo_type_names[i]; | |
c826a6e1 EA |
1038 | |
1039 | mutex_init(&vc4->bo_lock); | |
1040 | ||
1041 | INIT_LIST_HEAD(&vc4->bo_cache.time_list); | |
1042 | ||
1043 | INIT_WORK(&vc4->bo_cache.time_work, vc4_bo_cache_time_work); | |
0078730f | 1044 | timer_setup(&vc4->bo_cache.time_timer, vc4_bo_cache_time_timer, 0); |
f3099462 EA |
1045 | |
1046 | return 0; | |
c826a6e1 EA |
1047 | } |
1048 | ||
1049 | void vc4_bo_cache_destroy(struct drm_device *dev) | |
1050 | { | |
1051 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
f3099462 | 1052 | int i; |
c826a6e1 EA |
1053 | |
1054 | del_timer(&vc4->bo_cache.time_timer); | |
1055 | cancel_work_sync(&vc4->bo_cache.time_work); | |
1056 | ||
1057 | vc4_bo_cache_purge(dev); | |
1058 | ||
f3099462 EA |
1059 | for (i = 0; i < vc4->num_labels; i++) { |
1060 | if (vc4->bo_labels[i].num_allocated) { | |
1061 | DRM_ERROR("Destroying BO cache with %d %s " | |
1062 | "BOs still allocated\n", | |
1063 | vc4->bo_labels[i].num_allocated, | |
1064 | vc4->bo_labels[i].name); | |
1065 | } | |
1066 | ||
1067 | if (is_user_label(i)) | |
1068 | kfree(vc4->bo_labels[i].name); | |
c826a6e1 | 1069 | } |
f3099462 EA |
1070 | kfree(vc4->bo_labels); |
1071 | } | |
1072 | ||
1073 | int vc4_label_bo_ioctl(struct drm_device *dev, void *data, | |
1074 | struct drm_file *file_priv) | |
1075 | { | |
1076 | struct vc4_dev *vc4 = to_vc4_dev(dev); | |
1077 | struct drm_vc4_label_bo *args = data; | |
1078 | char *name; | |
1079 | struct drm_gem_object *gem_obj; | |
1080 | int ret = 0, label; | |
1081 | ||
1082 | if (!args->len) | |
1083 | return -EINVAL; | |
1084 | ||
1085 | name = strndup_user(u64_to_user_ptr(args->name), args->len + 1); | |
1086 | if (IS_ERR(name)) | |
1087 | return PTR_ERR(name); | |
1088 | ||
1089 | gem_obj = drm_gem_object_lookup(file_priv, args->handle); | |
1090 | if (!gem_obj) { | |
1091 | DRM_ERROR("Failed to look up GEM BO %d\n", args->handle); | |
1092 | kfree(name); | |
1093 | return -ENOENT; | |
1094 | } | |
1095 | ||
1096 | mutex_lock(&vc4->bo_lock); | |
1097 | label = vc4_get_user_label(vc4, name); | |
1098 | if (label != -1) | |
1099 | vc4_bo_set_label(gem_obj, label); | |
1100 | else | |
1101 | ret = -ENOMEM; | |
1102 | mutex_unlock(&vc4->bo_lock); | |
1103 | ||
b9c55b6e | 1104 | drm_gem_object_put_unlocked(gem_obj); |
f3099462 EA |
1105 | |
1106 | return ret; | |
c826a6e1 | 1107 | } |